55142635207 has 8 divisors (see below), whose sum is σ = 60163304832. Its totient is φ = 50123249400.

The previous prime is 55142635199. The next prime is 55142635213. The reversal of 55142635207 is 70253624155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55142635207 - 2³ = 55142635199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55142635207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55142635237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230019 + ... + 403972.

It is an arithmetic number, because the mean of its divisors is an integer number (7520413104).

Almost surely, 2^55142635207 is an apocalyptic number.

55142635207 is a deficient number, since it is larger than the sum of its proper divisors (5020669625).

55142635207 is a wasteful number, since it uses less digits than its factorization.

55142635207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641909.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 55142635207 in words is "fifty-five billion, one hundred forty-two million, six hundred thirty-five thousand, two hundred seven".